Dialysis machine



FIG. 1 is a perspective view of a dialysis machine, showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof, opposite that shown in FIG. 2;

FIG. 5 is a rear elevational view; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for a dialysis machine, as shown and described. 